My guess is that there will be a strong tendency among many voters to go for 16. ... Bxd5. I believe that is not the best move. The most natural is 17.Qxd5 and white will, even if the Queens are exchanged, have a lasting grip on the centre and the weak pawn d6.

So, the black queen must move and the dark squared bishop needs a guard. The only move to do that is Qd8. 16. ...Qd8 is therefore my suggestion.

Now, one can go further and analyze longer. But for move 16. ... I believe it is not necessary.